Class: LatLong::Point

Inherits:
Object
  • Object
show all
Defined in:
lib/lat_long/point.rb

Constant Summary collapse

ARGUMENT_ERRORS_TEXT = 
{
  direction:
    'direction argument is not supported, use any of the following ' +
    DIRECTION_MULTIPLIERS.keys.join(', '),
  distance_unit:
    'distance unit argument not supported, use any of the following ' +
    TO_METERS_MULTIPLIERS.keys.join(', '),
}.freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(lat, long) ⇒ Point

Returns a new instance of Point.



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# File 'lib/lat_long/point.rb', line 14

def initialize(lat, long)
  @lat = lat
  @long = long
end

Instance Attribute Details

#lat ⇒ Object (readonly)

Returns the value of attribute lat.



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# File 'lib/lat_long/point.rb', line 12

def lat
  @lat
end

#long ⇒ Object (readonly)

Returns the value of attribute long.



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# File 'lib/lat_long/point.rb', line 12

def long
  @long
end

Instance Method Details

#move(raw_distance, unit, direction) ⇒ Object 



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# File 'lib/lat_long/point.rb', line 23

def move(raw_distance, unit, direction)
  direction = direction_multipliers(direction)
  distance = distance_in_meters(raw_distance, unit)

  lat_offset = distance / EARTH_RADIUS
  long_offset = distance / (
    EARTH_RADIUS * Math.cos(Math::PI * @lat/180)
  )

  new_point_lat = @lat + (lat_offset * 180/Math::PI) * direction[:y_axis]
  new_point_long = @long + (long_offset * 180/Math::PI) * direction[:x_axis]

  { lat: new_point_lat, long: new_point_long }
end

#starting_point ⇒ Object 



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# File 'lib/lat_long/point.rb', line 19

def starting_point
  [@lat, @long]
end